7.6.4 In cases other than those referred in clause 7.6.3, UASP shall immediately obtain a provisional bill from MTNL before the pay by date of the original bill on the basis of the number of call units of the previous month. The provisional bill shall be paid by the UASP before the pay by date indicated in the provisional bill. Thereafter, within 7 days of the issue of the provisional bill, the UASP shall approach the designated authority of MTNL along with all his relevant records based on which the UASP disputes the bill issued by MTNL. The UASP shall, in consultation with the designated authority of MTNL, settle the dispute within 15 days of the issue of the provisional bill referred in this clause. In this consultation, the records made by the measurement devices located at the MTNL interface point shall have precedence over the records of the UASP. If after consultation, it is found that the original bill issued by the MTNL/UASP is correct, the balance amount of the original bill, being the amount that remained unpaid after taking into account and adjusting the amount received under the provisional bill, will have to be paid by the MTNL/UASP, as the case may be, within 7 days of the settlement of such dispute.